1225806264 has 32 divisors (see below), whose sum is σ = 3405018000. Its totient is φ = 408602016.

The previous prime is 1225806221. The next prime is 1225806269. The reversal of 1225806264 is 4626085221.

It is a happy number.

1225806264 is a `hidden beast` number, since 1 + 2 + 25 + 8 + 0 + 626 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225806269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837299 + ... + 2837730.

Almost surely, 2^1225806264 is an apocalyptic number.

It is an amenable number.

1225806264 is an abundant number, since it is smaller than the sum of its proper divisors (2179211736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225806264 is a wasteful number, since it uses less digits than its factorization.

1225806264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675044 (or 5675034 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1225806264 is about 35011.5161625429. The cubic root of 1225806264 is about 1070.2221753101. Note that the first 3 decimals are identical.

The spelling of 1225806264 in words is "one billion, two hundred twenty-five million, eight hundred six thousand, two hundred sixty-four".